package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.dto.PasswordEditDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordEditFailedException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        //对前端传过来的明文密码进行md5加密处理
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    @Override
    public void save(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();

        //对象属性拷贝
        BeanUtils.copyProperties(employeeDTO, employee);
        //设置账户状态，默认正常状态: 1表示正常，0表示锁定
        employee.setStatus(StatusConstant.ENABLE);
        //设置密码，默认密码123456
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
        /*//设置当前记录创建时间和修改时间
        employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());
        //设置当前记录创建人id和修改人id
        employee.setCreateUser(BaseContext.getCurrentId());
        employee.setUpdateUser(BaseContext.getCurrentId());*/

        employeeMapper.insert(employee);
    }

    @Override
    public PageResult pageQuery(EmployeePageQueryDTO employeePageQueryDTO) {
        //开始分页查询
        PageHelper.startPage(employeePageQueryDTO.getPage(), employeePageQueryDTO.getPageSize());
        Page<Employee> page = employeeMapper.pageQuery(employeePageQueryDTO);
        long total = page.getTotal();
        List<Employee> records = page.getResult();
        return new PageResult(total, records);
    }

    @Override
    public void startOrStop(Integer status, Long id) {
        /*Employee employee = new Employee();
        employee.setStatus(status);
        employee.setId(id);*/
        Employee employee = Employee.builder()
                                    .status(status)
                                    .id(id)
                                    .build();
        /*employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(BaseContext.getCurrentId());*/
        employeeMapper.update(employee);
    }

    @Override
    public Employee getById(Long id) {
        Employee employee = employeeMapper.selectById(id);
        employee.setPassword("******");
        return employee;
    }
    @Override
    public void update(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO, employee);
        /*employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(BaseContext.getCurrentId());*/
        employeeMapper.update(employee);
    }

    @Override
    public void editPassword(PasswordEditDTO passwordEditDTO) {
        passwordEditDTO.setEmpId(BaseContext.getCurrentId());
        Employee employee = employeeMapper.selectById(passwordEditDTO.getEmpId());
        if(!employee.getPassword().equals(DigestUtils.md5DigestAsHex(passwordEditDTO.getOldPassword().getBytes()))){
            throw new PasswordEditFailedException(MessageConstant.PASSWORD_EDIT_FAILED);
        }
        employee.setPassword(DigestUtils.md5DigestAsHex(passwordEditDTO.getNewPassword().getBytes()));
        /*employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(BaseContext.getCurrentId());*/
        employeeMapper.update(employee);
    }
}
